Optical Radiation Technical data: Measuring range Spectral sensitivity Maximum spectral sensitivity • Measuring independent of direction - thanks to the probe head’s spherical characteristics • Weather-proof aluminum housing, with plastic globe • Suitable for universal use, inter alia for measuring in photostability tests according to various international standards and ICH guidelines (International Conference on Harmonization) • Spectral range of the probe head corresponds to the sensitivity of the human eye (V-lambda radiation). Signal output Duty cycle Power supply 2 screws, M4, in base plate Cable passage anodized aluminum Directional characteristic Absolute error Nominal temperature Operating temperature Ball diameter: 40 mm Overall height: 76 mm Type (including test protocol) Lux probe head for measuring illuminance, with spherical characteristic, including 1.5-meter cable and ALMEMO® connector UVA probe head FLA 613 UVAK Technical data: • Measuring independent of direction - thanks to the probe head’s spherical characteristics • Weather-proof aluminum housing, with plastic globe • Suitable for universal use, inter alia for measuring in photostability tests according to various international standards and ICH guidelines (International Conference on Harmonization) • Measuring head for measuring the UVA Type (including test protocol) Measuring range 0.02 to approx. 50 W/m2 Spectral sensitivity 310 to 400 nm Maximum spectral sensitivity 355 nm Signal output 0 to 2 V Duty cycle <1 second Power supply via ALMEMO® connector +5 to +15 V Fastening 2 screws M4, in base plate Cable passage at side Housing anodized aluminum Diffuser PMMA (polymethyl methacrylate, acrylic) Ball PMMA (transparent to UV) Directional characteristic see diagram Linearity <1% Absolute error < 10 % Nominal temperature 22 ± 2 °C Operating temperature –20 to +60 °C Dimensions Ball diameter: 40 mm Overall height: 76 mm Weight approx. 100 grams UVA probe head, with spherical characteristic, including 1.5-meter cable and ALMEMO® connector Factory calibration KL90xx radiation for sensor, see chapter „Calibration Certificates“ 11/2025 • We reserve the right to make technical changes.